Leighton, I don't have any data either. However, PB and 7625 seems to have similar (though not idential) characteristics. I wonder about using 7625 data but substituting PB and then sending five rounds to Armbrust for testing. Then you could begin tweaking the load. Fairly inexpensive and there's time since big bird season is soon drawing to a close. I really like PB in my 12 gauge for vintage loads so just can't see any reason on earth why it wouldn't work on the big boy.

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